Special Weather Statement
Special Weather Statement
National Weather Service San Juan PR
259 PM AST Mon Sep 15 2025
PRZ005-008>010-152000-
Northwest PR-North Central PR-Mayaguez and Vicinity PR-
Western Interior PR-
259 PM AST Mon Sep 15 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL TO NORTHWESTERN
MUNICIPALITIES THROUGH 400 PM AST...
At 258 PM AST, Doppler radar was tracking a strong thunderstorm near
Quebradillas, moving west at 20 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 1848 6692 1849 6679 1847 6674 1847 6670
1849 6666 1847 6662 1829 6673 1839 6720
1842 6716 1849 6717 1851 6714 1852 6704
TIME...MOT...LOC 1858Z 097DEG 31KT 1843 6690
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
MNG
Marine Weather Statement
Marine Weather Statement
National Weather Service San Juan PR
246 PM AST Mon Sep 15 2025
AMZ712-152015-
246 PM AST Mon Sep 15 2025
...A STRONG THUNDERSTORM APPROACHING THE WATERS...
The areas affected include...
Coastal Waters of Northern Puerto Rico out 10 NM...
At 244 PM AST, Doppler radar indicated a strong thunderstorm, capable
of producing winds to around 30 knots. This thunderstorm was located
over mainly the coastline from Vega Alta to Vega Baja, moving west-
northwestward at 5 to 10 knot.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Intense lightning is occurring with this storm. If caught on the open
water stay below deck if possible, keep away from ungrounded metal
objects.
&&
LAT...LON 1859 6618 1847 6620 1848 6626 1847 6631
1849 6637 1849 6643 1847 6645 1847 6648
1850 6662 1847 6673 1850 6679 1849 6682
1865 6676
$$
CAM
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service San Juan PR
331 AM AST Mon Sep 15 2025
AMZ711>745-PRZ001>013-160745-
San Juan and Vicinity-Northeast-Southeast-Eastern Interior-
North Central-Central Interior-Ponce and Vicinity-Northwest-
Western Interior-Mayaguez and Vicinity-Southwest-Culebra-Vieques-
The nearshore and off shore Atlantic and Caribbean Coastal Waters-
331 AM AST Mon Sep 15 2025
This Hazardous Weather Outlook is for portions of Puerto Rico.
.DAY ONE...Today and Tonight
.Lightning...Isolated thunderstorms. Stay alert and be prepared
to take shelter if storms develop.
.Excessive Rainfall...Flooding in urban areas, roads, small
streams, and washes. There is a low chance of isolated flash
floods. Elsewhere, plan for water ponding on roads and in poorly
drained areas.
.Excessive Heat...This level of heat affects primarily those
individuals extremely sensitive to heat, especially when outdoors
without effective cooling and/or adequate hydration.
.Wind...Breezy conditions (18-22 kts | 21-25 mph), particularly
across coastal areas. Unsecured items could blow around.
.Rip Currents...Occasional life-threatening rip currents will
develop along the surf zone, particularly across the north and
east coast, Vieques, and Culebra. Isolated stronger rip currents
will occur elsewhere, especially near piers, jetties, and
channels.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
A tropical wave will increase the potential for showers and
thunderstorms on Wednesday and Thursday. The risk of flooding will
be elevated and the risk of lightning will be limited. This risk
will persist beyond Thursday for the interior and west fore each
afternoon. Rip currents will remain moderate through the
workweek. Heat risk will persist on days with no rain, and it will
be even hotter for Friday and the upcoming weekend.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service San Juan PR
331 AM AST Mon Sep 15 2025
AMZ716-726-VIZ001-002-160745-
St. Thomas St. John adjacent Islands-St Croix-
Nearshore Atlantic and adjacent Caribbean Coastal Waters-
331 AM AST Mon Sep 15 2025
This Hazardous Weather Outlook is for portions of USVI.
.DAY ONE...Today and Tonight
.Lightning...Isolated thunderstorms. Stay alert and be prepared
to take shelter if storms develop.
.Excessive Rainfall...Ponding of water in roads and poorly
drained areas. There is a low chance of localized urban and small
streams flooding.
.Excessive Heat...This level of heat affects primarily those
individuals extremely sensitive to heat, especially when outdoors
without effective cooling and/or adequate hydration.
.Wind...Breezy conditions (18-22 kts | 21-25 mph). Unsecured
items could blow around.
.Rip Currents...Occasional life-threatening rip currents will
develop along the surf zone, particularly across Saint Croix.
Isolated stronger rip currents will occur elsewhere, especially
near piers, jetties, and channels.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
A tropical wave will increase the potential for showers and
thunderstorms on Wednesday and Thursday. The risk of flooding will
be limited to elevated and the risk of lightning will be limited.
Rip currents will remain moderate through the workweek for Saint
Croix. Heat risk will persist on days with no rain, and it will
be even hotter for Friday and the upcoming weekend.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hydrologic Outlook
Hydrologic Outlook
PRC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-031-
033-035-037-039-041-043-045-047-049-051-053>055-057-059-061-063-065-
067-069-071-073-075-077-079-081-083-085-087-089-091-093-095-097-099-
101-103-105-107-109-111-113-115-117-119-121-123-125-127-129-131-133-
135-137-139-141-143-145-147-149-151-153-VIC010-020-030-171215-
Hydrologic Outlook
National Weather Service San Juan PR
318 AM AST Mon Sep 15 2025
...UNSETTLED WEATHER CONDITIONS WILL PERSIST THROUGH MUCH OF THE
WORKWEEK ENHANCING THE RISK OF FLOODING...
The active afternoons experienced in the past couple of days have
maintained saturated soils along a great portion of the interior and
west of Puerto Rico. These rains have also recharged must of the
stream channels in Puerto Rico, with the exceptions of a few river
in the eastern-interior and southeast.
The forecast for this week calls for a low level disturbance moving
in today, and a tropical wave coupled with an upper level low
arriving on Wednesday and Thursday.
With the disturbance reaching the islands today, the best chances of
heavy showers and thunderstorms are early for the Virgin Islands,
and then this activity will spread into Puerto Rico, reaching the
east, the San Juan metro area, the interior and west.
The wave moving in on Wednesday and Thursday looks stronger, and
will likely cause an increase in the coverage of showers and
thunderstorms in Puerto Rico and the Virgin Islands. So far, the
event is not expected to be a complete wash out, but the local
guidance are hinting on an upper and low level atmospheric pattern
favorable for rainfall production.
The main threats in Puerto Rico for most of the workweek will be the
risk of urban and isolated flash flooding, landslides, water surges
along rivers, and some rivers reaching flood stage. Rainfall
accumulation could range from 1-2 inches each day, with higher
isolated amounts, especially on Wednesday and Thursday.
The main threats in the Virgin Islands are water surges along
drainage guts, ponding of water in roadways and low-lying areas, and
isolated urban flood and landslides. Rainfall accumulation could
range from up to an inch each day, and very isolated higher amounts.
The users should continue to monitor the evolution of the forecast,
and stay tuned for any flood products issued by the National Weather
Service. This product will be updated again only if conditions
change.
$$
ERG
